1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @build ModuleSetAccessibleTest
  27  * @modules java.base/java.lang:open
  28  *          java.base/jdk.internal.misc:+open
  29  * @run testng ModuleSetAccessibleTest
  30  * @summary Test java.lang.reflect.AccessibleObject with modules
  31  */
  32 
  33 import java.lang.reflect.AccessibleObject;
  34 import java.lang.reflect.Constructor;
  35 import java.lang.reflect.Field;
  36 import java.lang.reflect.InaccessibleObjectException;
  37 import java.lang.reflect.InvocationTargetException;
  38 import java.lang.reflect.Method;
  39 import java.lang.reflect.Module;
  40 
  41 import jdk.internal.misc.Unsafe;
  42 
  43 import org.testng.annotations.Test;
  44 import static org.testng.Assert.*;
  45 
  46 @Test
  47 public class ModuleSetAccessibleTest {
  48 
  49     /**
  50      * Invoke a private constructor on a public class in an exported package
  51      */
  52     public void testPrivateConstructorInExportedPackage() throws Exception {
  53         Constructor<?> ctor = Unsafe.class.getDeclaredConstructor();
  54 
  55         try {
  56             ctor.newInstance();
  57             assertTrue(false);
  58         } catch (IllegalAccessException expected) { }
  59 
  60         ctor.setAccessible(true);
  61         Unsafe unsafe = (Unsafe) ctor.newInstance();
  62     }
  63 
  64 
  65     /**
  66      * Invoke a private method on a public class in an exported package
  67      */
  68     public void testPrivateMethodInExportedPackage() throws Exception {
  69         Method m = Unsafe.class.getDeclaredMethod("throwIllegalAccessError");
  70         try {
  71             m.invoke(null);
  72             assertTrue(false);
  73         } catch (IllegalAccessException expected) { }
  74 
  75         m.setAccessible(true);
  76         try {
  77             m.invoke(null);
  78             assertTrue(false);
  79         } catch (InvocationTargetException e) {
  80             // thrown by throwIllegalAccessError
  81             assertTrue(e.getCause() instanceof IllegalAccessError);
  82         }
  83     }
  84 
  85 
  86     /**
  87      * Access a private field in a public class that is an exported package
  88      */
  89     public void testPrivateFieldInExportedPackage() throws Exception {
  90         Field f = Unsafe.class.getDeclaredField("theUnsafe");
  91 
  92         try {
  93             f.get(null);
  94             assertTrue(false);
  95         } catch (IllegalAccessException expected) { }
  96 
  97         f.setAccessible(true);
  98         Unsafe unsafe = (Unsafe) f.get(null);
  99     }
 100 
 101 
 102     /**
 103      * Invoke a public constructor on a public class in a non-exported package
 104      */
 105     public void testPublicConstructorInNonExportedPackage() throws Exception {
 106         Class<?> clazz = Class.forName("sun.security.x509.X500Name");
 107         Constructor<?> ctor = clazz.getConstructor(String.class);
 108 
 109         try {
 110             ctor.newInstance("cn=duke");
 111             assertTrue(false);
 112         } catch (IllegalAccessException expected) { }
 113 
 114         try {
 115             ctor.setAccessible(true);
 116             assertTrue(false);
 117         } catch (InaccessibleObjectException expected) { }
 118 
 119         ctor.setAccessible(false); // should succeed
 120     }
 121 
 122 
 123     /**
 124      * Access a public field in a public class that in a non-exported package
 125      */
 126     public void testPublicFieldInNonExportedPackage() throws Exception {
 127         Class<?> clazz = Class.forName("sun.security.x509.X500Name");
 128         Field f = clazz.getField("SERIALNUMBER_OID");
 129 
 130         try {
 131             f.get(null);
 132             assertTrue(false);
 133         } catch (IllegalAccessException expected) { }
 134 
 135         try {
 136             f.setAccessible(true);
 137             assertTrue(false);
 138         } catch (InaccessibleObjectException expected) { }
 139 
 140         f.setAccessible(false); // should succeed
 141     }
 142 
 143 
 144     /**
 145      * Test that the Class constructor cannot be make accessible.
 146      */
 147     public void testJavaLangClass() throws Exception {
 148 
 149         // non-public constructor
 150         Constructor<?> ctor
 151             = Class.class.getDeclaredConstructor(ClassLoader.class, Class.class);
 152         AccessibleObject[] ctors = { ctor };
 153 
 154         try {
 155             ctor.setAccessible(true);
 156             assertTrue(false);
 157         } catch (SecurityException expected) { }
 158 
 159         try {
 160             AccessibleObject.setAccessible(ctors, true);
 161             assertTrue(false);
 162         } catch (SecurityException expected) { }
 163 
 164         // should succeed
 165         ctor.setAccessible(false);
 166         AccessibleObject.setAccessible(ctors, false);
 167 
 168     }
 169 
 170 }